Vaillant Boiler Prices

vaillant boiler prices
vaillant boiler prices

Vaillant is one of the big names in boiler manufacturing. But you might still be wondering whether they’re the right choice for your home. With so many companies now within the boiler market, it can be confusing to understand precisely what’s the best option for you, and importantly, how much does a new boiler cost.

In this guide, we’re going to take a look at some of the models from the Vaillant range.  We’ll take a look at combination, system and regular boilers and then provide you with a complete list of all the current models along with information on what you can expect to pay.

Vaillant Combi Boilers Prices From £770 to £1,481

Combination boilers are the most popular heating choice for UK households. Their quick production of hot water without the need for additional tanks makes them an efficient and space-saving option.

Vaillant ecoTEC exclusive with Green iQ From £1,267

vaillant boiler prices

Vaillant considers the ecoTEC exclusive as being the very best in the business. With a strong focus on energy efficiency, it means the lowest levels of fuel consumption and, in turn, low running costs. The eco-credentials also extend to the manufacturing process, and that’s because once the ecoTEC comes to the end of its working life, 85% of its components can be recycled.

The boiler is compatible with Vaillant’s vSMART control system, which gives you complete control over your heating via your smartphone or tablet. But, even when you’re not keeping an eye on what’s happening, the ecoTEC adapts itself so that you get exactly the heating that you want. So, yet again, Vaillant has found a way to allow their boilers to waste less energy and to reduce your fuel bills.

This boiler is available with two different power outputs, 35kW and 43kW, which can provide 17.8 litres of hot water per minute. As you would expect, this is an ErP ‘A’ rated boiler, and if you’re not on a mains gas supply, then the ecoTEC can also run on LPG.

Vaillant ecoTEC Exclusive Green iQ Combination BoilerVaillant ecoTEC 843 exclusive Green iQVaillant ecoTEC 835 exclusive Green iQ
TypeGas BoilerGas Boiler
Warranty (Years)55
Width (mm)440440
Height (mm)720720
Depth (mm)474406
Weight (Kg)5042.5
ErP Space Heating EfficiencyAA
ErP Water Heating EfficiencyAA
Flow Rate (L/min)17.814.5
FuelNatural GasNatural Gas

Vaillant ecoTEC Combi Store From £1,386

vaillant boiler prices

Larger homes often have the need for high volumes of hot water. The challenge then comes from when more than one shower is in use at the same time or when you need hot water in the kitchen when someone else is running a bath. These are the times when a traditional combination boiler can struggle to meet those demands.

Traditionally, the solution has been to fit a regular or system boiler. However, this also needs a hot water cylinder and the addition of a cold-water tank in the case of the regular boiler. The ecoTEC plus 38kW combination store now provides the convenience and efficiency of a combi boiler, with the high-volume hot water supply of the system boiler.  The ecoTEC is able to deliver 20 litres of hot water per minute, much more than your standard combination boiler.

For many households, though, there are only certain times of the day when they need that high volume of hot water. So, away from those times, the ecoTEC drops to using just 16% of its maximum power to provide savings on fuel and money. As with many of the Vaillant models, the ecoTEC is super quiet when operating and, as such, has been awarded Quiet Mark accreditation.

Vaillant ecoTEC Plus Storage Combi BoilerVaillant ecoTEC Plus 938
TypeGas Boiler
Warranty (Years)5
Width (mm)440
Height (mm)720
Depth (mm)600
Weight (Kg)60
ErP Space Heating EfficiencyA
ErP Water Heating EfficiencyA
Noise Level (Decibels)46
Flow Rate (L/min)15.9
FuelNatural Gas

Vaillant ecoTEC pro Combi £851

When you have precision heating, it suddenly becomes easier to improve efficiency and reduce bills. And that’s exactly what the ecoTEC pro combi can offer, heating that operates to reduce your fuel bills. Designed for small to medium homes, the ecoTEC pro can deliver instant hot water without the need for a hot water tank.

Vaillant has kept things simple when it comes to operating the boiler, making it intuitive to use and so easy to set up to meet your needs. There are a range of controls that can be used, so whether you prefer a simple analogue timer or prefer an app on your smartphone, they are both options for you. If the smartphone option is more down your street, then this is enabled via Vaillant’s vSMART app, which is available for both Android and Apple iOS. Through this system, you can:

vaillant boiler prices
  • Reduce energy bills – using intelligent control, the boiler will use the minimum energy needed to heat your home.
  • Comfort and control wherever you are – Stuck at work? Then you can delay your heating coming on so that you’re not paying for an empty house to heated.
  • Come back to your perfect temperature – Warm your home to the exact temperature that’s right for you so that you come home to perfection
  • Intelligent learning – Once installed, vSMART begins to learn all there is to know about your heating requirements. Then your boiler can be set to work smarter and with lower energy use.  
  • Connect to other smart home technology – vSMART works with other technology such as Amazon Echo and Alexa. That then means that you can ask Alexa to turn on the heating or switch on the hot water as you head home after a day at work.
  • Stay in control when you’re away – simply tell the app that you’re heading out for a few days, and it will balance frost protection with unnecessary heating of your home.   
  • Change with the season – the app is able to monitor local weather conditions and then adjust the boiler to the perfect temperature. All without you needing to think about it!  
  • Control multiple boilers from one app – If you have Vaillant boilers in more than one home, then you can control them all through the app. That also means that you can make sure elderly relatives have the heating on during colder months of the year.
vaillant boiler prices

The ecoTEC pro comes with a bright and easy-to-use display and that means setting it up and checking the status is quick and easy. And like, all Vaillant’s models, it’s Quiet Mark approved, meaning it’s one of the quietest products in its category. Now there’s no need to hide your boiler away for fear of not being able to hear the TV!

When it comes to the technology inside of the boiler, the ecoTEC pro is continually assessing how it can adapt to provide enough heat to meet your requirements without negatively affecting efficiency levels. Then there are the premium parts used in its construction including the stainless-steel heat exchanger which as an excellent reputation for its reliability.  

Hand-built in Vaillant’s award-winning Derbyshire manufacturing plant, it comes with 2 years guarantee as standard, and then with 7 to 10 years available when you book a Vaillant Advance installer.

Vaillant ecoTEC Pro Combination BoilerVaillant ecoTEC Pro 28Vaillant ecoTEC Pro 24Vaillant ecoTEC Pro 30
TypeGas BoilerGas BoilerGas Boiler
Warranty (Years)222
Width (mm)440440440
Height (mm)720720720
Depth (mm)338338338
Weight (Kg)383839
ErP Space Heating EfficiencyAAA
ErP Water Heating EfficiencyAAA
Noise Level (Decibels)494949
Flow Rate (L/min)11.19.612.3
FuelNatural GasNatural GasNatural Gas

Compare Vaillant Combi Boiler Prices

Boiler ModelWarrantyBoiler Price
Vaillant ecoTEC plus 825 Combi Gas Boiler 25kW10 years£1,003
Vaillant ecoTEC plus 832 Combi Gas Boiler 32kW10 years£1,115
Vaillant ecoTEC plus 835 Combi Gas Boiler 35kW10 years£1,176
Vaillant ecoTEC plus 838 Combi Gas Boiler 38kW10 years£1,267
Vaillant ecoTEC Combi Store 38kW10 years£1,386
Vaillant ecoTEC Exclusive Green IQ 835 Combi Gas Boiler 35kW10 years£1,267
Vaillant ecoTEC Exclusive Green IQ 843 Combi Gas Boiler 43kW10 years£1,481
Vaillant ecoTEC Pro 24kW Combi Gas boiler10 years£851
Vaillant ecoTEC Pro 28 kW Combi Gas Boiler10 years£953
Vaillant ecoTEC Pro 30kW combi Gas boiler10 years£1,004
Vaillant ecoFIT pure 825 Combi Gas Boiler10 years£770
Vaillant ecoFIT pure 830 Combi Gas Boiler10 years£877
Vaillant ecoFIT pure 835 Combi Gas Boiler10 years£987
Vaillant ecoFIT sustain Combi Gas boiler 25kW2 years£1,069
Vaillant ecoFIT sustain Combi Gas boiler 28kW2 years£1,021
Vaillant ecoFIT sustain Combi Gas boiler 30kW2 years£1,218

Vaillant Regular Boilers Prices

vaillant boiler prices

When a regular boiler comes to the end of its working life, then the most straightforward option is usually to replace it with one of the same type. Though the choice of regular boilers is a little more limited, Vaillant provides a wide range of power outputs across the two models on offer. Vaillant regular boilers require the use of both a hot water cylinder and a cold water tank, which is usually in the loft.

ecoTEC Plus Regular Gas Boiler £679

This is a compact, kitchen cupboard sized model that’s become well known for its reliability. There are six different power outputs on offer ranging from 12 right through to 35kW, meaning that the ecoTEC Plus is going to be suitable for most sizes of homes. When that’s combined with its efficiency level and ease of use, then it’s easy to see why this is such a popular model.

ecoTEC plus regular boiler range12kW15kW18kW24kW30kW35kW
SEDBUK SAP seasonal efficiency 2009 (%)89.389.389.389.389.289.2
ErP ratingAAAAAA

The ecoTEC Plus has a handy functionality allowing it to drop to using 16% of its maximum power, providing a great saving on fuel and money. The ecoTEC is manufactured in Vaillant’s Derbyshire manufacturing plant, where it’s fitted with an aluminium heat exchanger to enhance efficiency.

Vaillant offers a two-year guarantee as standard, but this goes up to seven or ten years when a Vaillant Advance installer installs it.

Compare Vaillant Regular Boiler Prices

Boiler ModelWarrantyBoiler Price
Vaillant ecoTEC plus 412 Regular Gas Boiler 12kW5 years£679
Vaillant ecoTEC plus 415 Regular Gas Boiler 15kW5 years£760
Vaillant ecoTEC plus 418 Regular Gas Boiler 18kW5 years£846
Vaillant ecoTEC plus 424 Regular Gas Boiler 24kW5 years£897
Vaillant ecoTEC plus 430 Regular Gas Boiler 30kW5 years£953
Vaillant ecoTEC plus 435 Regular Gas Boiler 35kW5 years£1,379
Vaillant ecoFIT pure 412 Regular Gas Boiler10 years£653
Vaillant ecoFIT pure 415 Regular Gas Boiler10 years£689
Vaillant ecoFIT pure 418 Regular Gas Boiler10 years£760
Vaillant ecoFIT pure 425 Regular Gas Boiler10 years£826
Vaillant ecoFIT pure 430 Regular Gas Boiler10 years£877
Vaillant ecoFIT pure 435 Regular Gas Boiler10 years£1,328

Vaillant System Boilers Prices

If you want a Vaillant boiler but you are unsure if a combi boiler can keep up to your household water demand, then you need to consider a system boiler. If you already have a hot water tank or cylinder in your home then a simple system boiler swap would be perfect. If you don’t have a hot water cylinder already then this will be an extra cost on top of the boiler unit itself. Always check what type of boiler you currently have as changing your boiler type can be expensive.

vaillant boiler prices

Vaillant ecoTEC Pure System Boiler From £738

When there’s little spare space, the ecoFIT Pure comes to the rescue! That’s because its compact design means that it can fit into a standard kitchen cupboard. It’s also been designed with a choice of flue options to provide even more flexibility for where it can be installed.  

The small size doesn’t, though, mean that this isn’t a boiler packed with features. The powerful aluminium heat exchanger, for example, offers fantastic performance resulting in low energy consumption. And that theme continues with its smart operations, whereby it can switch to just 20% of its maximum output when demand for hot water drops. 

Valliant has also considered how they can protect the heat exchanger and extend its reliability, and they’ve done this by installed a 4-sided cooling and water agitation system.  Stress on the heat exchanger is reduced, and maintenance requirements are minimal.

Vaillant ecoFIT Pure System BoilerVaillant ecoFIT pure 612Vaillant ecoFIT pure 615Vaillant ecoFIT pureVaillant ecoFIT pure 625Vaillant ecoFIT pure 630
TypeGas BoilerGas BoilerGas BoilerGas BoilerGas Boiler
Warranty (Years)22222
Width (mm)390390390390390
Height (mm)700700700700700
Depth (mm)295295295295295
Weight (Kg)3333343434
ErP Space Heating EfficiencyAAAAA
Noise Level (Decibels)4548495154
FuelNatural GasNatural GasNatural GasNatural GasNatural Gas

Vaillant ecoTEC Plus 48kW and 64kW From £2,300

If your hot water requirements are right at the top of the scale, then you need a boiler that can cope with high volume delivery. The ecoTEC plus 48 and 64kW feature a high-efficiency stainless steel heat engine, which is well known for its quality and reliability. In addition, this engine has a fantastic ability to reduce waste while operating and, as such, also reduces emissions to an incredibly low level.

The ecoTEC Plus is fitted with an air separator, so that means that it’s quieter when operating, and it adds to an extended system life.  Despite its capabilities, the ecoTEC plus has a compact design making a replacement install quick and easy.

Vaillant ecoTEC Plus CommercialVaillant ecoTEC Plus 48kWVaillant ecoTEC Plus 64kW
TypeCommercial BoilerCommercial Boiler
Warranty (Years)55
Width (mm)440440
Height (mm)720720
Depth (mm)405473
Weight (Kg)3848
ErP Space Heating EfficiencyAA
Noise Level (Decibels)56.556.6
FuelNatural GasNatural Gas

Compare Vaillant System Boiler Prices

Boiler ModelWarrantyBoiler Price
Vaillant ecoTEC plus 612 System Gas Boiler 12kW10 years£790
Vaillant ecoTEC plus 615 System Gas Boiler 15kW10 years£851
Vaillant ecoTEC plus 618 System Gas Boiler 18kW10 years£932
Vaillant ecoTEC plus 624 System Gas Boiler 24kW10 years£1,064
Vaillant ecoTEC plus 630 System Gas Boiler 30kW10 years£1,166
Vaillant ecoTEC plus 637 System Gas Boiler 37kW10 years£1,290
Vaillant ecoFIT pure 612 system Gas boiler 12kW10 years£738
Vaillant ecoFIT pure 615 system Gas boiler 15kW10 years£811
Vaillant ecoFIT pure 618 System Gas boiler 18kW10 years£877
Vaillant ecoFIT pure 625 System Gas boiler 25kW10 years£1,004
Vaillant ecoFIT pure 630 System Gas boiler 30kW10 years£1,097
Vaillant ecoTEC exclusive Green iQ 627 System Gas Boiler 27kW10 years£1,166
Vaillant ecoTEC plus 64kW System Gas Boiler 64kW5 years£2,737
Vaillant ecoTEC plus 48kW System Gas Boiler48kW5 years£2,300
Vaillant ecoFIT sustain 15Kw2 years£615
Vaillant ecoFIT sustain 18Kw2 years£889
Vaillant ecoFIT sustain 30Kw2 years£946

Who is Vaillant?

vaillant boilers prices

It was 1874 when Vaillant was established in Remscheid, Germany and twenty years later, they launched their very first gas boiler. In 1967 they launched the ‘Combi-Geyser’ that allowed both hot water and heating to be generated from the same unit. This was the forerunner for the combination boiler that we’re now so familiar with.

Throughout its history, Vaillant has had a strong focus on innovation. From being the designers of the world’s first fully mixing atmospheric burner to being the first UK boiler manufacturer to be awarded Quiet Mark accreditation.

Vaillant UK has its award-winning factory, at its Derbyshire headquarters in Belper. In addition, they have a team of over 250 engineers based across the country and the largest renewables service fleet of any of the boiler manufacturers within the UK

Vaillant Boiler Warranties

Vaillant offers some generous guarantee periods on their range of boilers but to get the maximum length of cover, you do need to ensure that you meet all of their requirements. When this hasn’t happened, you may find your ten-year warranty slide right down to just twenty-four months.

There are thirty-one different clauses in the Vaillant terms and conditions relating to their guarantees, but we’ve picked five critical elements for you:

  1. A Gas Safe registered engineer must install your boiler, and that needs to happen within six months of the boiler being sent to you from the Vaillant warehouse.
  2. Once the installation is complete, the engineer must complete the Benchmark logbook. Vaillant may ask to see this if you call them out during the warranty period, so it’s essential to keep this somewhere safe.
  3. You also need to keep proof of purchase to ensure that the warranty commences from install rather than the date of manufacture.
  4. Once the boiler has been installed, the guarantee must be registered with Vaillant within a 30 day period.
  5.  Servicing must take place every year and be completed by either a Vaillant or Gas Safe Registered engineer.


Vaillant offers a wide range of boilers, whether that’s combi, system or regular. There are choices to suit most budgets, and they come with a well-earned reputation for high quality and longevity.

Here at New Boiler Costs, we like to compare all the best manufacturers, so if you’re looking for similar boilers then check out our other manufacturers such as Viessmann, Worcester Bosch, Baxi, Ideal, Vokera, Potterton, Alpha & more. You can always click get a quote to get recommended combi boilers, system boilers and regular boilers suited to your home. We can even find you prices for oil boilers & electric boilers.

If you’re now wondering which boiler is the right model for your home, help is at hand.  Simply enter your heating requirements and a few details about the property, and we’ll instantly present a range of boilers that are a perfect match. Even better, we’ll also provide fixed piece quotations so that you know exactly what’s included with no nasty surprises!

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